Electronman
New Member
Hi guys,
I have a question,
I used a piezo transducer (the ones which are used in clocks and cheap stuffs as speaker) to lighten a small 2mm LED, so the piezo is used as a power supply connected directly to the LED.
Now the LED lights up when the piezo receives the stresses which are generated by my finger.
Unfortunately I can not light up the LED when I put the piezo just in front of my stereo speaker (the piezo is connected to the surface of the speaker cavity and the Speaker's volume is as high as possible).
Can somebody tell me what the reason is?
Thanks a bunch
P.s Can somebody direct me if there is any rule of thumb into piezo transducers used as batteries?
I have a question,
I used a piezo transducer (the ones which are used in clocks and cheap stuffs as speaker) to lighten a small 2mm LED, so the piezo is used as a power supply connected directly to the LED.
Now the LED lights up when the piezo receives the stresses which are generated by my finger.
Unfortunately I can not light up the LED when I put the piezo just in front of my stereo speaker (the piezo is connected to the surface of the speaker cavity and the Speaker's volume is as high as possible).
Can somebody tell me what the reason is?
Thanks a bunch
P.s Can somebody direct me if there is any rule of thumb into piezo transducers used as batteries?